Vulnerabilities > CVE-2016-3346 - Permissions, Privileges, and Access Controls vulnerability in Microsoft Windows 10 1511/1607

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
microsoft
CWE-264
nessus

Summary

Microsoft Windows 10 Gold, 1511, and 1607 does not properly enforce permissions, which allows local users to obtain Administrator access via a crafted DLL, aka "Windows Permissions Enforcement Elevation of Privilege Vulnerability."

Vulnerable Configurations

Part Description Count
OS
Microsoft
3

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Msbulletin

bulletin_idMS16-110
bulletin_url
date2016-09-13T00:00:00
impactRemote code execution
knowledgebase_id3178467
knowledgebase_url
severityImportant
titleSecurity Update for Microsoft Windows

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-110.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An elevation of privilege vulnerability exists due to a failure to properly enforce permissions when loading specially crafted DLLs. A local attacker can exploit this vulnerability to execute arbitrary code with administrator privileges. (CVE-2016-3346) - An information disclosure vulnerability exists due to a failure to properly validate NT LAN Manager (NTLM) Single Sign-On (SSO) requests during Microsoft Account (MSA) login sessions. An unauthenticated, remote attacker can exploit this vulnerability, by convincing a user to load a malicious document that initiates an NTLM SSO validation request or to visit a malicious website or SMB / UNC path destination, to disclose a user
last seen2020-06-01
modified2020-06-02
plugin id93469
published2016-09-13
reporterThis script is Copyright (C) 2016-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/93469
titleMS16-110: Security Update for Microsoft Windows (3178467)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(93469);
  script_version("1.8");
  script_cvs_date("Date: 2018/11/15 20:50:32");

  script_cve_id(
    "CVE-2016-3346",
    "CVE-2016-3352",
    "CVE-2016-3368",
    "CVE-2016-3369"
  );
  script_bugtraq_id(
    92846,
    92847,
    92850,
    92852
  );
  script_xref(name:"MSFT", value:"MS16-110");
  script_xref(name:"MSKB", value:"3184471");
  script_xref(name:"MSKB", value:"3187754");
  script_xref(name:"MSKB", value:"3185611");
  script_xref(name:"MSKB", value:"3185614");
  script_xref(name:"MSKB", value:"3189866");
  script_xref(name:"IAVA", value:"2016-A-0250");

  script_name(english:"MS16-110: Security Update for Microsoft Windows (3178467)");
  script_summary(english:"Checks the version of the DLL files.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected by multiple vulnerabilities :

  - An elevation of privilege vulnerability exists due to a
    failure to properly enforce permissions when loading
    specially crafted DLLs. A local attacker can exploit
    this vulnerability to execute arbitrary code with
    administrator privileges. (CVE-2016-3346)

  - An information disclosure vulnerability exists due to a
    failure to properly validate NT LAN Manager (NTLM)
    Single Sign-On (SSO) requests during Microsoft Account
    (MSA) login sessions. An unauthenticated, remote
    attacker can exploit this vulnerability, by convincing a
    user to load a malicious document that initiates an NTLM
    SSO validation request or to visit a malicious website
    or SMB / UNC path destination, to disclose a user's NTLM
    password hash. (CVE-2016-3352)

  - A remote code execution vulnerability exists due to
    improper handling of objects in memory. A remote
    attacker with a domain user account can exploit this
    vulnerability, via a specially crafted request, to
    execute arbitrary code with elevated permissions.
    (CVE-2016-3368)

  - A denial of service vulnerability exists due to improper
    handling of objects in memory. An unauthenticated,
    remote attacker can exploit this to cause the system to
    stop responding. (CVE-2016-3369)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-110");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 7,
2008 R2, 2012, 8.1, RT 8.1, 2012 R2, and 10.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2016-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-110';
kbs = make_list(
  "3184471",
  "3187754",
  "3185611",
  "3185614",
  "3189866"
);
vuln = 0;

if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit("SMB/Registry/Enumerated");
get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);

if (hotfix_check_sp_range(vista:'2', win7:'1', win8:'0', win81:'0', win10:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "Windows 8.1" >!< productname)
  audit(AUDIT_OS_SP_NOT_VULN);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

registry_init();
hklm = registry_hive_connect(hive:HKEY_LOCAL_MACHINE, exit_on_fail:TRUE);

# Determine if Active Directory is enabled.
LDS_Enabled  = FALSE;
NTDS_Enabled = FALSE;

# NTDS check
ntds_value = get_registry_value(
  handle:hklm, item:"SYSTEM\CurrentControlSet\Services\NTDS\Parameters\DSA Database file");
if (!isnull(ntds_value))
  NTDS_Enabled = TRUE;

# LDS check
lds_value = get_registry_value(
  handle:hklm, item:"SYSTEM\CurrentControlSet\Services\DirectoryServices\Performance\InstallType");
if (!isnull(lds_value))
  LDS_Enabled = TRUE;

RegCloseKey(handle:hklm);
close_registry(close:FALSE);

# KB 3184471
if (
  (NTDS_Enabled || LDS_Enabled) &&
  (
  # Windows Vista Service Pack 2 / Windows Server 2008
    hotfix_is_vulnerable(os:"6.0", sp:2, file:"ntdsai.dll", version:"6.0.6002.19686", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:"3184471") ||
    hotfix_is_vulnerable(os:"6.0", sp:2, file:"ntdsai.dll", version:"6.0.6002.24008", min_version:"6.0.6002.22000", dir:"\system32", bulletin:bulletin, kb:"3184471") ||

    # Windows 7 / Windows Server 2008 R2
    hotfix_is_vulnerable(os:"6.1", sp:1, file:"ntdsai.dll", version:"6.1.7601.23535", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:"3184471") ||

    # Windows Server 2012
    hotfix_is_vulnerable(os:"6.2", sp:0, file:"ntdsai.dll", version:"6.2.9200.21953", min_version:"6.2.9200.16000", dir:"\system32", bulletin:bulletin, kb:"3184471") ||

    # Windows 8.1 / Windows Server 2012 R2
    hotfix_is_vulnerable(os:"6.3", sp:0, file:"ntdsai.dll", version:"6.3.9600.18435", min_version:"6.3.9600.16000", dir:"\system32", bulletin:bulletin, kb:"3184471")
  )
)
  vuln++;

# KB 3187754
if (
  
  # Windows 8.1 (not 2012 R2)
  "Windows 8.1" >< productname &&
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"lsasrv.dll", version:"6.3.9600.18454", dir:"\system32", bulletin:bulletin, kb:"3187754")

)
  vuln++;

# Windows 10
if (
  hotfix_is_vulnerable(os:"10", sp:0, file:"lsasrv.dll", version:"10.0.10240.17113", os_build:"10240", dir:"\system32", bulletin:bulletin, kb:"3185611") ||
  hotfix_is_vulnerable(os:"10", sp:0, file:"lsasrv.dll", version:"10.0.10586.589",   os_build:"10586", dir:"\system32", bulletin:bulletin, kb:"3185614") ||
  hotfix_is_vulnerable(os:"10", sp:0, file:"lsasrv.dll", version:"10.0.14393.187",    os_build:"14393", dir:"\system32", bulletin:bulletin, kb:"3189866")
)
  vuln++;

if (vuln)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}